.b1{
    text-align: center;
    padding-top: 50px;
}
.b1 h1{
    width: 600px;
    margin: 0 auto;
    font-size: 45px;
    margin-top: 30px;
    margin-bottom: 20px;
    width: 500px;
}
.b1 span{
    display: inline-block;
    width: 130px;
    height: 50px;
    line-height: 50px;
    background-color: rgb(237, 232, 232);
    margin-left: 10px;
    border-radius: 20px;
}
.b2{
    border-top: 10px solid #eee;
    margin-top: 40px;
    padding: 30px;

}
.b2>div{
    display: flex;
    margin-bottom: 30px;
}
.b2>div div h3{
    overflow: hidden;
    width: 400px;
    white-space: nowrap;
    text-overflow: ellipsis;
    font-size: 35px;
    margin-top: 20px;
}
.b2>div div{
    margin-left: 20px;
}
.b2>div div p{
    height: 70px;
    font-size: 25px;
    overflow:hidden ;
    margin-top: 20px;
    margin-bottom: 30px;
}
.b2 h2{
    margin-bottom: 20px;
}
.b2>div img{
    border-radius: 0 30px 0 0;
}
.b2>div div img{
    border-radius: 50%;
    margin-right: 30px;
    vertical-align: middle;
}
.box{
    height: calc(100vh - 90px);
    overflow: auto;
}
.h{
    font-size: 40px;
    font-weight: 400;
}